Sash-fastener.



PATENTED MAM, 19o4.

' R. BAXTER. I

SASH "FASTENBR.

APPLIOATIOI FILED NOV. 17, 1908.

I0 IODEL.

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. 1. UN TE "STATES i atented May 3, 1904. 1

1 PATENT O FICE. f

- "ROBERT BAX'IER, OF MILTON, NEW ZEALAND.

" SASH-FASTE NER SPECIFICATION" forming part of Letters Patent No. 758,952, dated May 3, 1904. Application filed November 17, 1903. Serial No. 181,609. (F model.)

To all whom it may concern:

Be it :known that I, RoBER'r BAXTER, woolen I expert, of Milton, New Zealand, have invented certain new and useful Improvements in Sash- Fasteners, of which the followingis aspecification.

The invention consists in the following fea-' tures .and combination and arrangement of parts: There is a bent-lever or catch adapted to be pivotally secured near'the'bend orangle thereof to the rail of a sash orto-the side bead ofa window-frame and having one end bev eled, sokas to slide over withxthe beveled surfacewhen moved in one direction, and notches,

hereinafter described, formed-in straps' or' in the rail of a sash, said catch being so designed and mounted as to fall intoitslocking position.

in the notches by gravity, the plain unbev-' eled surface being the locking-surfacei These notches'are of two kinds. One is like a rack of ordinary type, allowing the beveled endofthe catch "to slide over them in one direction.- The other notch is of peculiar formation, inasmuch as part of the notch is sloped similarly to the beveled end of the lever, which is adapt ed to lie on it and slide over it in one direction. The remainder of this notch is curved, so as to prevent the vertical movement of the catch, and yet allow clearance for the movement of the plain surface of the end of the catch when the latter is moved on its pivot. There is also awedge hinged to the other end of the catch and adapted to hang down, so as to press against the sash when the beveled end of the catch is in its locking position, and so prevent any movement of the catch.

In the accompanying drawings, illustrating .the invention, Figure 1 is a side elevation of the catch, wedge, and a rack mounted on sashes. Fig. 2 is a front elevation of Fig. 1. Fig. 3 is a side elevation illustrating the notches of peculiar formation for clearance.

The same reference-numerals indicate the same or similar parts.

A bent lever or catch consisting of a horizontal portion 1 and a second portion 1 at an obtuse angle with the first portion is secured pivotally near the bend 2 by a pin 2 in lugs 3 4 on a base 5, adapted to be mounted on the top rail 6 of the bottom sash of a window.

The innerend 7 of the portion 1" of the catch 1 has-hinged to it'a'wedge 8, adapted to hang normally vertical and wedge between the end 7' and the base 5 when thecatch 1 is lying horizontally, and so prevent it from moving up or down. The horizontal portion 1 is suf ficientlyheavyto' overbalance the combined weight of the-portion 1 andthe wedge 8.

The'other endof the catch hasits lower part 17 beveled for the purpose of allowing it when unwedged and moved in one direction to slide easily over the points 10 of the notches of a rack 11-, secured to an adjacent vertical rail-of J.

the top sash of a window. These notches have their upper surfaces 19 slopingupward at an obtus'eangle with their other surfaces 20, so

, that theend of the catch- 1 when the latter is turned on its pivot'2 may clear the point 10 "with the assistance ofa slight vertical movement of either sash. Notches 13 13 of special formation are" illustrated in Fig. 3 integral with a strip 14:, adapted to be secured to a sashrail or to the window-bead. These notches have their lower surfaces 16 downwardly slop-' ing steeply from their middle points, being adapted in shape for the bevel-face'17 of the catch l t'oi lie on and slide over them. The upper surfaces 18 of these notches are longer than those illustrated in Fig. 1 and so as to allow play for clearance without the assisting vertical movement of either sash of the end of the catch when moved on its pivot and slope outward from their middle points, so as to engage the upper surface of the catch 1 when the upper sash is moved vertically downward.

In operation the rack 11, Fig. 1, is secured to a vertical side rail of an upper sash of a window, and the catch 1 is mounted on an adjacent top rail of the lower sash, so thatwhen the window is closed the point 9 of the catch will engage in the recess of a notch 10. The wedge 8 then falls or is turned to wedge between the end 7 of the catch andthe base-plate '5. The window-sashes arethen fastened against all movement. To open the window,

ity against the rack 11, and any movement of the upper sash downward will cause it to lock in a notch, preventing downward movement of the upper-sash, and if the wedge is placed in its wedging position both sashes will be locked together. With the notch illustrated in Fig. 3 the operation is similar and will be obvious from the foregoing description.

The fastener fixed as illustrated in Fig. 1 Viz., with the catch on the top rail of the bottom sash Working into the rack on the upper sashis suflicient for all purposes on ordinary double-sash windows with or without weights. For instance, when both sashes are closed they are automatically fastened without being touched. Ventilation is obtained by one or both sashes being left open, as desired. The sashes cannot be moved up or down from the outside. The catch 1 prevents the opening, and the wedge-8 prevents the closing of the sashes. Should neither the catch nor the wedge be engaged, the movement of either sash will cause them to engage, jamming the fastener, sashes, and frame in one mass. Any length of notched plate or notches can be fitted to or in the sash. When the fastener is fixed as illustrated in Fig. 1, but three notches are cut in the vertical rail of the upper sash. Then when the catch 1 is in the bottom notch the sashes are closed. When it is in the middle notch, the top or bottom sash may be open. When it is in the upper notch, the top and bottom sashes may be open, the sashes being fastened in all three positions. Thus both sashes fasten one another up and down for a few inches. If it is desired to fix sashes in this position, the fastener is fixed on a vertical rail of the lower sash, and the notched plate illustrated in Fig. l is attached to the side beading on the window-frame. This method does not jam with the framework. When the notched plate illustrated in Fig. 3 is used on the side head of the window-frame, the sashes and frame are jammed together on pressure being applied. This arrangement canalso be used for sashes. without weights, as follows: The fastener can be applied, as illustrated in Fig. 1, preventing the lowering or raising of the bottom sash, or the fastener can be attachedto the side beading with a notched plate on the opposing vertical rail to hold up the bottom sash for ventilation while the upper sash is down.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

'1. A sash-fastener comprising a catch consisting of a horizontal portion provided with a beveled end, and a second lighter portion at an obtuse angle with the first portion, abase, a pivotal connection between the catch and the base near the angle between the portions, and a wedge hinged to the end of said second portion extending from said end to said base, substantially as and for the purposes set forth.

2. A sash-fastener comprising a catch consisting of a horizontal portion provided with a beveled end, and a second lighter portion at an obtuse angle with the first portion, a base, a pivotal connection between the catch and the base near the angle between the portions,

a wedge hinged to the end of said second portion extending from said end to said base,,and a rack with notches having upwardly and outwardly sloping upper surfaces at an obtuse angle with downwardly and outwardly sloping surfaces, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ROBERT BAXTER. Witnesses:

A. J. PARK, J. R. PARK. 

